imperspicuus
From LSJ
τὸ βέλτερον κακοῦ καὶ τὸ δίμοιρον αἰνῶ, καὶ δίκᾳ δίκας ἕπεσθαι, ξὺν εὐχαῖς ἐμαῖς, λυτηρίοις μηχαναῖς θεοῦ πάρα → I approve the better kind of evil, the two-thirds kind, and that, in accordance with my prayers, through contrivances bringing salvation at the god’s hand
Latin > English (Lewis & Short)
imperspĭcŭus: (inp-), a, um, adj. 2. in-perspicuus,
I not clear, obscure: judicum ingenia, Plin. Ep. 1, 20, 17.
Latin > French (Gaffiot 2016)
imperspĭcŭus,¹⁶ a, um, impénétrable : Plin. Min. Ep. 1, 20, 17.